US20090123757A1 - Latent-reactive adhesives for identification documents - Google Patents

Latent-reactive adhesives for identification documents Download PDF

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Publication number
US20090123757A1
US20090123757A1 US12/269,180 US26918008A US2009123757A1 US 20090123757 A1 US20090123757 A1 US 20090123757A1 US 26918008 A US26918008 A US 26918008A US 2009123757 A1 US2009123757 A1 US 2009123757A1
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US
United States
Prior art keywords
layer
identification document
thermoplastic
reactive
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12/269,180
Other languages
English (en)
Inventor
Heinz Pudleiner
Joerg Buechner
Mehmet-Cengiz Yesildag
Klaus Meyer
Harald Kraus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Covestro Deutschland AG
Original Assignee
Bayer MaterialScience AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer MaterialScience AG filed Critical Bayer MaterialScience AG
Publication of US20090123757A1 publication Critical patent/US20090123757A1/en
Assigned to BAYER MATERIALSCIENCE AG reassignment BAYER MATERIALSCIENCE AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KRAUS, HARALD, MEYER, KLAUS, BUECHNER, JOERG, YESILDAG, MEHMET-CENGIZ, PUDLEINER, HEINZ
Abandoned legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/12Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/30Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/32Layered products comprising a layer of synthetic resin comprising polyolefins
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/36Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/40Layered products comprising a layer of synthetic resin comprising polyurethanes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022Non-woven fabric
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/024Woven fabric
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/703Isocyanates or isothiocyanates transformed in a latent form by physical means
    • C08G18/705Dispersions of isocyanates or isothiocyanates in a liquid medium
    • C08G18/706Dispersions of isocyanates or isothiocyanates in a liquid medium the liquid medium being water
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/77Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78Nitrogen
    • C08G18/79Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/791Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
    • C08G18/792Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72Polyisocyanates or polyisothiocyanates
    • C08G18/77Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78Nitrogen
    • C08G18/79Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
    • C08G18/798Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing urethdione groups
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00Ancillary operations in connection with laminating processes
    • B32B38/16Drying; Softening; Cleaning
    • B32B38/164Drying
    • B32B2038/166Removing moisture
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/02Coating on the layer surface on fibrous or filamentary layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/10Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00Coating on the layer surface
    • B32B2255/26Polymeric coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00Condition, form or state of the layers or laminate
    • B32B2305/34Inserts
    • B32B2305/342Chips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2425/00Cards, e.g. identity cards, credit cards
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00Electrical equipment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2150/00Compositions for coatings
    • C08G2150/20Compositions for powder coatings
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2170/00Compositions for adhesives
    • C08G2170/80Compositions for aqueous adhesives
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31507Of polycarbonate
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31554Next to second layer of polyamidoester
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31565Next to polyester [polyethylene terephthalate, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31573Next to addition polymer of ethylenically unsaturated monomer
    • Y10T428/31583Nitrile monomer type [polyacrylonitrile, etc.]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31551Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31573Next to addition polymer of ethylenically unsaturated monomer
    • Y10T428/31587Hydrocarbon polymer [polyethylene, polybutadiene, etc.]

Definitions

  • the present invention relates to an identification document having layer A), B) and C), wherein A) is a thermoplastic, B) is a layer produced from a stable, latent-reactive adhesive, and C) is a thermoplastic.
  • PC-based identification documents In the production of polycarbonate (PC)-based identification documents (ID documents), the problem arises that complex (electronic) components and also diffractive structures (inter alia holograms) are destroyed during the lamination process unless they are flexibly packaged.
  • the problem has hitherto been avoided either by creating filled cavities in the immediate vicinity of the component or by using thermoelastic/thermoplastic buffer layers (for example thermoplastic polyurethane, TPU).
  • TPU thermoplastic polyurethane
  • PC polycarbonate
  • Latent-reactive adhesives are known per se, for example from EP-A-0 922 720.
  • there are two solid phases in latent-reactive adhesives for example as a mixture of two substances in the form of two types of crystals, which therefore do not react with one another at room temperature or under normal environmental conditions.
  • the substances undergo a chemical reaction with one another only when activated, for example by heating.
  • a process for producing stable dispersions of fine-particle surface-deactivated isocyanates is described in DE 35 17 333.
  • the resulting stable dispersions are suitable as crosslinking agents.
  • a use of aqueous dispersions of surface-deactivated solid, fine-particle polyisocyanates as crosslinkers in textile pigment printing pastes and dye baths is described in DE 35 29 530. Following the application process, the textile pigment printing pastes and dye baths are fixed to the fabric with hot air or steam.
  • a substrate having a latent-reactive adhesive bearing a stable latent-reactive layer or powder would open up the possibility of being applied in the location where the corresponding equipment is present, being stored for a predefinable period of time and then being transported to the location where processing is carried out to form further intermediates or the end product.
  • Stable, latent-reactive materials or layers are described in WO 93/25599. These consist of isocyanate-reactive polymers having a melting point above 40° C. and surface-deactivated polyisocyanates. In order to produce the mixture, the components are melted at temperatures which are substantially above the softening point of the polymer. The equipment costs for producing and applying these materials and the energy costs are considerable. In addition, for stability and processing reasons, only surface-deactivated polyisocyanates having a crosslinking temperature of over 80° C. can be used in these systems. Furthermore, the application provides a selective and controlled non-homogeneous mixing of the components. This requires laborious process steps, however.
  • the object underlying the invention is therefore to provide new identification documents having improved security characteristics and a process for their production.
  • the delamination characteristics in particular should be improved.
  • An embodiment of the present invention is an identification document comprising layer A), layer B), and layer C), wherein layer A) is a thermoplastic, layer B) is produced from a stable, latent-reactive adhesive, and layer C) is a thermoplastic.
  • the adhesive of layer B comprises an aqueous dispersion comprising a diisocyanate or polyisocyanate having a melting point or softening point of greater than 30° C. and an isocyanate-reactive polymer.
  • the adhesive of layer 1 comprises an aqueous dispersion having a viscosity of at least 2000 mPas.
  • thermomechanical analysis TMA
  • TMA thermomechanical analysis
  • thermomechanical analysis TMA
  • diisocyanate or polyisocyanate is selected from the group consisting of dimerisation product, trimerisation product, urea derivatives of TDI, and urea derivatives of IPDI.
  • Another embodiment of the present invention is the above identification document, comprising a bonded joint produced by applying said dispersion to the substrate to be bonded, drying it, decrystallising the dried adhesive layer by heating it briefly at temperature greater than 65° C. and joining said layer in the decrystallised state to the substrate to be joined.
  • Another embodiment of the present invention is the above identification document wherein said decrystallization is achieved by heating the dried adhesive layer for less than five minutes at a temperature between 80° C. and 110° C.
  • thermoplastic in layer A) and said thermoplastic in layer C) are independently selected from the group consisting of polyearbonate, polylmethyl methacrylate, styrene polymers, styrene copolymers, transparent thermoplastic polyurethanes, polyolefins, polycondensates of terephthalic acid, copolycondensates of terephthalic acid, polyethylene glycol naphthenate, and transparent polysulfones.
  • thermoplastic in layer A) and said thermoplastic in layer C) are independently selected from the group consisting of transparent polystyrene, polystyrene acrylonitrile, transparent polypropylenes, polyolefins based on cyclic olefins, polyethylene terephthalate, copolyethylene terephthalate, and glycol-modified polyethylene terephthalate.
  • thermoplastic in layer A) and said thermoplastic in layer C) are independently selected from the group consisting of polycarbonate, polycondensates of terephthalic acid, and copolycondensates of terephthatic acid.
  • thermoplastic in layer A) and said thermoplastic in layer C) are independently selected from the group consisting of polycarbonate, polyethylene terephthalate, copolyethylene terephthalate, and glycol-modified polyethylene terephthalate.
  • Yet another embodiment of the present invention is a process for producing the above identification document comprising i) mixing a substantially aqueous dispersion or solution having an isocyanate-reactive polymer with a water-suspended surface-deactivated polyisocyanate to produce a mixture, ii) applying said mixture of i) to a layer C), iii) removing water from the mixture of i) below the reaction temperature of the diisocyanate or polyisocyanate to form a layer B), and iv) applying a layer C) to said layer B).
  • Another embodiment of the present invention is the above process, wherein said water is removed at a temperature below the reaction temperature of the isocyanate such that the resulting layers are substantially dry and solid and are latently reactive at temperatures below the reaction temperature of polyisocyanate and polymers.
  • Yet another embodiment of the present invention is the above identification document, further comprising an electronic component.
  • Another embodiment of the present invention is the above identification document, wherein said electronic component is an integrated circuit.
  • identification document denotes a multilayer, flat document having security features such as chips, photographs, biometric data, etc. These security features may be visible or may at least be able to be scanned from the outside.
  • the size of the identification document is normally between that of a cheque card and a passport.
  • the identification document can also be part of a multi-part document, such as a plastic identification document in a passport which also contains paper or cardboard elements, for example.
  • the present invention relates to such an identification document characterised in that the adhesive contains an aqueous dispersion containing a diisocyanate or polyisocyanate having a melting point or softening point of >30° C. and an isocyanate-reactive polymer.
  • the present invention relates to such an identification document characterised in that the adhesive contains an aqueous dispersion having a viscosity of at least 2000 mPas.
  • the present invention relates to such an identification document characterised in that the isocyanate-reactive polymer is polyurethane, which is synthesised from crystallising polymer chains which, when measured using thermomechanical analysis (TMA), decrystallise partially or completely at temperatures below +110° C., preferably at temperatures below +90° C.
  • TMA thermomechanical analysis
  • the present invention relates to such an identification document characterised in that the diisocyanate or polyisocyanate is selected from the group consisting of dimerisation product, trimerisation product and urea derivatives of TDI or IPDI.
  • the present invention relates to such an identification document characterised in that a bonded joint is produced by applying a dispersion according to claim 1 to the substrate to be bonded and then drying it, and then decrystallising the dried adhesive layer by heating it briefly, preferably for less than five minutes, at T>65° C., preferably at a temperature of 80° C. ⁇ T ⁇ 110° C., and joining it in the decrystallised state to the substrate to be joined.
  • thermoplastic denotes a thermoplastic having polymer chains, such as for example polycarbonate, polymethyl methacrylate (PMMA), polymers or copolymers with styrene, such as for example and preferably transparent polystyrene (PS) or polystyrene acrylonitrile (SAN), transparent thermoplastic polyurethanes, and polyolefins, such as for example and preferably transparent polypropylene types or polyolefins based on cyclic olefins (e.g.
  • TOPAS® Topas Advanced Polymers
  • polycondensates or copolycondensates of terephthalic acid such as for example and preferably polyethylene or copolyethylene terephthalate (PET or CoPET) or glycol-modified PET (PETG), polyethylene glycol naphthenate (PEN), transparent polysulfones (PSU).
  • PET or CoPET polyethylene or copolyethylene terephthalate
  • PET polyethylene or copolyethylene terephthalate
  • PET polyethylene glycol naphthenate
  • PSU transparent polysulfones
  • thermoplastic in layer A) and layer C) is mutually independently selected from the group consisting of polycarbonate, polycondensates or copolycondensates of terephthalic acid, such as for example and preferably polyethylene or copolyethylene terephthalate (PET or CoPET) or glycol-modified PET (PETG).
  • terephthalic acid such as for example and preferably polyethylene or copolyethylene terephthalate (PET or CoPET) or glycol-modified PET (PETG).
  • Laminates for in particular high-security ID card applications having at least one stable, latent-reactive layer can accordingly be produced by the use of a substantially aqueous dispersion containing at least one surface-deactivated polyisocyanate and at least one dispersed or dissolved isocyanate-reactive polymer.
  • the invention also provides a process for producing laminates having at least one stable, latent-reactive layers wherein
  • Case i) results in an anhydrous, dry, latent-reactive film or a latent-reactive powder which is capable of being stored at room temperature or at slightly elevated temperature. The reactivity of the surface-deactivated isocyanates with the functional groups of the polymer is retained.
  • Case ii) results in a molten system after the water has been evaporated off.
  • the bonding of a laminate consisting of films serves as an example. In this phase too the surface-deactivated isocyanates are unchanged and retain their reactivity. The bond is based initially on the thermoplastic properties of the polymer.
  • reaction temperature In certain cases it is sufficient for the reaction temperature to be exceeded for only a short time in order to trigger the crosslinking reaction.
  • the reaction or thickening temperatures of the deactivated polyisocyanates should be temperatures in the range from 30° C. to 180° C., preferably in the range from 40° C. to 150° C.
  • the thickening or reaction temperature is the temperature at which the surface-deactivating layer of isocyanate in the polymer dissolves or is destroyed by other means.
  • the polyisocyanate is released and dissolved in the polymer.
  • Final curing takes place by diffusion and reaction of the polyisocyanate with the functional groups of the polymer with a rise in viscosity and crosslinking.
  • the thickening and reaction temperature is above or below the softening point of the polymer.
  • the stability of the unreacted system, the reaction temperature and the reaction course are determined by the type of polyisocyanate, the type and amount of surface stabiliser, the solubility parameter of the functional polymer and by catalysts, plasticisers and other auxiliary agents. These are extensively described in the patent documents referred to in the introduction.
  • the invention also provides post-application machining steps for the substrate bearing the layer or powder. These include steps such as are necessary for example for machining the substrate into its final form by means of punching, cutting to size, bending, folding, laminating, etc. It has furthermore surprisingly been established that the film or powder according to the invention can be processed in its plastic state. Even after days or months, the layer or powder can be heated to temperatures above the softening point of the polymer without initiating a reaction between the functional groups of the polymer and the surface-deactivated isocyanates. Processing in the plastic state can even be performed with repeated heating and cooling.
  • the films or powders are stable, latent-reactive adhesive systems.
  • All diisocyanates or polyisocyanates or mixtures thereof are suitable as polyisocyanates for the process according to the invention provided that they have a melting point above 40° C. and can be converted by known methods into powder form with particle sizes below 200 ⁇ m. They can be aliphatic, cycloaliphatic, heterocyclic or aromatic polyisocyanates.
  • diphenylmethane-4,4′-diisocyanate MDI
  • NDI naphthalene-1,5-diisocyanate
  • TODI 3,3′-dimethylbiphenyl-4,4′-diisocyanate
  • TDI-U diimeric 1-methyl-2,4-phenylene diisocyanate
  • TDIH 3,3′-diisocyanato-4,4′-dimethyl-N,N′-diphenyl urea
  • Addition products consisting of 1-methyl-2,4-phenylene diisocyanate and 1,4-butanediol or 1,2-ethanediol have very advantageous properties even in solid and liquid solvent-containing or solvent-free systems. These are illustrated above all in terms of their low curing or crosslinking temperature, which is in the temperature range below 90° C.
  • the use of this mixture, whether based largely on water or polyol, is therefore very advantageous for coatings and bonds for temperature-sensitive substrates.
  • the surface stabilisation reaction can be performed in various ways:
  • the concentration of the deactivating agent should be 0.1 to 25, preferably 0.5 to 8 equivalent percent, relative to the total isocyanate groups present.
  • the particle size of the powdered polyisocyanates often has to be adjusted to a particle size in the range from 0.5 to 20 ⁇ m by means of a fine dispersion or wet grinding stage following the synthesis.
  • High-speed mixers, dispersing devices of the rotor-stator type, attrition mills, pearl and sand mills, ball mills and grinding gap mills are suitable for this purpose, at temperatures below 40° C.
  • grinding is carried out on the deactivated polyisocyanate, in the presence of the deactivating agent, in the non-reactive dispersing agent or water with subsequent deactivation.
  • the ground and surface-stabilised polyisocyanate can be separated from the grinding dispersions and dried.
  • Catalysts can also be added in order to control the surface deactivation and crosslinking reaction. Catalysts which are resistant to hydrolysis in aqueous solution or dispersion and which subsequently then also accelerate the heat-activated reaction are preferred.
  • urethane catalysts are organic tin, iron, lead, cobalt, bismuth, antimony, zinc compounds or mixtures thereof. Alkyl mercaptide compounds of dibutyl tin are preferred because of their elevated hydrolysis resistance.
  • Tertiary amines such as dimethyl benzylamine, diazabicycloundecane and non-volatile polyurethane foam catalysts on a tertiary amine basis can be used for special purposes or in combination with metal catalysts, although the catalytic activity can be adversely affected by reaction with atmospheric carbon dioxide.
  • the concentration of catalysts is in the range from 0.001 to 3%, preferably 0.01% to 1%, relative to the reactive system.
  • the aqueous dispersions for the preparations according to the invention preferably contain polyurethane or polyurea dispersions with crystalline polyester soft segments as the isocyanate-reactive dispersion polymer.
  • Dispersions of isocyanate-reactive polyurethane polymers of crystalline or partially crystalline polymer chains are particularly preferred which when measured by means of thermomechanical analysis at least partially decrystallise at temperatures of between 50° C. and 120° C.
  • the acrylate dispersion polymers can also optionally be mentioned, but the focus is on polyurethane or polyurea dispersion polymers with crystalline polyester soft segments.
  • Water-soluble or water-dispersible emulsion or dispersion polymers bearing isocyanate-reactive functional groups are suitable as reaction partners according to the invention of the polyisocyanates. These are produced according to the prior art by polymerisation of olefinically unsaturated monomers in solution, emulsion or suspension.
  • the film-forming polymers contain 0.2 to 15%, preferably 1 to 8%, of monomers incorporated by polymerisation having isocyanate-reactive groups such as hydroxyl, amino, carboxyl, carbonamide groups.
  • Examples of such functional monomers are: allyl alcohol, hydroxyethyl or hydroxypropyl acrylate and methacrylate, butanediol monoacrylate, ethoxylated or propoxylated acrylates or methacrylates, N-methylol acrylamide, tert-butyl aminoethyl methacrylate, acrylic and methacrylic acid, maleic acid, maleic acid monoester.
  • Glycidyl methacrylate and allyl glycidyl ether can also be copolymerised.
  • amines or amine alcohols to form the secondary amine
  • This reaction increases the reactivity of the functional groups of the polymer with the isocyanate groups, to the detriment of the secondary reaction with water.
  • water-soluble hydroxy-functional binders such as polyvinyl alcohol, partially saponified polyvinyl acetate, hydroxyethyl cellulose, hydroxypropyl cellulose, and water-dispersible hydroxy-functional polyesters, hydroxy-functional sulfopolyesters, and polyurethane dispersions, dispersions of polyamidoamines bearing carboxyl or hydroxyl primary or secondary amino groups.
  • Aqueous colloidal dispersions or colloidal solutions with particle sizes between 1 and 100 nm can likewise be produced in colloid mills, starting from thermoplastic polymers with isocyanate-reactive groups. Examples include higher-molecular-weight solid epoxy resins, polyethylene vinyl alcohol and polyethylene co-acrylic acid.
  • inert or functional additives can be incorporated or dispersed in the resulting high-viscosity paste or low-viscosity mixture.
  • the functional additives include hydroxy-functional or amino-functional powdered or liquid low-molecular-weight to high-molecular-weight compounds, which can react with the solid polyisocyanates above the reaction temperature. The stoichiometric ratios must be adjusted accordingly.
  • Low-molecular-weight compounds are understood to be compounds having molecular weights of between 40 and 500 g/mol, while high-molecular-weight compounds are understood to be those whose molecular weights are between 500 and 10,000 g/mol.
  • Examples which can be mentioned include: low-molecular-weight to high-molecular-weight liquid polyols or/and polyamines, solid polyfunctional polyols or/and aromatic polyamines.
  • Examples are triethanolainine, butanediol, trimethylol propane, ethoxylated bisphenol A, end-ethoxylated polypropylene glycols, 3,5-diethyl toluoylene-2,4- and 2,6-diamine, polytetramethlyene oxide di-(p-aminobenzoate), tris-hydroxyethyl isocyanurate, hydroquinone bis-hydroxyethyl ether, pentaerythritol, 4,4′-diaminobenzanilide, 4,4′-methylene bis-(2,6-diethyl aniline).
  • the inert additives include, for example, wetting agents, organic or inorganic thickeners, plasticisers, fillers, plastic powders, pigments, dyes, light stabilisers, ageing stabilisers, anti-corrosive agents, flame retardants, blowing agents, adhesive resins, organofunctional silanes, chopped fibres and optionally small amounts of inert solvents.
  • the advantages of the present invention lie in the separation of the application of the aqueous dispersion from the crosslinking reaction, i.e; the final curing.
  • adhesive films can be applied to wood, glass or other substrates or supports in one location, these prefabricated products can be stored and/or shipped and cured at another location to form the end product.
  • a further advantage of the process according to the invention and the use of the corresponding products lies in the use of water as the dispersion medium.
  • the energy consumption for producing the dispersions is low.
  • the proportion of organic solvents is minimal, which from an environmental protection perspective results in very advantageous processing.
  • a further advantage lies in the fact that surface-deactivated polyisocyanates having a melting point in the range from 40 to 150° C. can also be incorporated without problem.
  • the crosslinking temperatures can be in the range from 35° C. to 90° C. With these low crosslinking temperatures even temperature-sensitive substrates can be bonded with this one-component system under exposure to heat.
  • the layer or powder obtained from the aqueous suspension, dispersion or solution can be stored for months.
  • the storage period at room temperature or at slightly elevated temperatures differs, however, depending on the solution characteristics of the solid film for the polyisocyanate.
  • the storage period for the system according to the invention in the anhydrous and uncrosslinked state is at least three times, conventionally more than ten times that of the same mixture with the same polyisocyanates which are not surface-deactivated.
  • the layers or powders according to the invention are stable for at least six months, at room temperature for at least one month, however, and are able to be processed according to the invention.
  • latent-reactive denotes the state of the substantially anhydrous layer or powder in which the surface-deactivated polyisocyanate and the isocyanate-reactive polymer are present in the substantially uncrosslinked state.
  • the heat for thermoplastic processing and for crosslinking can preferably be supplied by convection heat or radiant heat.
  • the stable aqueous suspension, dispersion or solution of surface-deactivated fine-particle polyisocyanates and dispersed or water-soluble polymers with isocyanate-reactive groups can be applied to the surface of the substrate to be bonded or coated, in particular by brushing, spraying, atomising, knife application, trowel application, pouring, dipping, extruding or by roller application or by printing.
  • Suitable substrates for the laminates according to the invention are thermoplastics such as polycarbonates or copolycarbonates based on diphenols, polyacrylates or copolyacrylates and polymethacrylates or copolymethacrylates, such as for example and preferably polymethyl methacrylate (PMMA), polymers or copolymers with styrene, such as for example and preferably transparent polystyrene (PS) or polystyrene acrylonitrile (SAN), transparent thermoplastic polyurethanes, and polyolefins, such as for example and preferably transparent polypropylene types or polyolefins based on cyclic olefins (e.g.
  • thermoplastics such as polycarbonates or copolycarbonates based on diphenols, polyacrylates or copolyacrylates and polymethacrylates or copolymethacrylates, such as for example and preferably polymethyl methacrylate (PMMA), polymers or copolymers with styrene
  • TOPAS® Topas Advanced Polymers
  • polycondensates or copolycondensates of terephthalic acid such as for example and preferably polyethylene or copolyethylene terephthalate (PET or COPET) or glycol-modified PET (PETG), polyethylene glycol naphthenate (PEN), transparent polysulfones (PSU).
  • PET or COPET polyethylene or copolyethylene terephthalate
  • PET polyethylene or copolyethylene terephthalate
  • PET polyethylene or copolyethylene terephthalate
  • PEN polyethylene glycol naphthenate
  • PSU transparent polysulfones
  • the coated surface to be bonded is brought into the thermoplastic state by raising the temperature to above the softening point of the polymer, joined to a second substrate and the temperature raised to above the thickening or reaction temperature while exerting pressure. Further processing steps can optionally be performed while the system is in the thermoplastic state.
  • the stable aqueous dispersion of surface-deactivated fine-particle polyisocyanates and dispersed or water-soluble polymers with isocyanate-reactive groups are brought into the form of a latent-reactive adhesive film, adhesive tape, adhesive nonwoven or adhesive woven fabric which can establish adhesion on both sides.
  • the dispersion according to the invention is applied to a non-adhesive backing tape or release paper and the water is volatilised at room temperature or at temperatures up to the softening point of the polymer. After cooling, the adhesive film can be detached from the backing and stored without a backing until use. Alternatively the adhesive film can be stored together with the backing paper.
  • the reactive dispersion is applied by spraying, atomising, knife application, pouring, dipping, padding, by roller application or by printing, the water is volatilised at room temperature or at temperatures up to the softening point of the polymer and the adhesive nonwoven or woven fabric, provided or impregnated with the latently heat-reactive adhesive layer, is stored until use.
  • the backing-free adhesive films, adhesive tapes, adhesive nonwoven or woven fabrics are used as an adhesive layer between substrates. It is also possible to apply or to sinter adhesive films, nonwoven or woven fabrics to one side of a substrate surface in the plastic state. This laminate can be stored at room temperature until it is finally bonded to a second substrate surface.
  • the stable aqueous dispersion of surface-deactivated fine-particle polyisocyanates and dispersed or water-soluble polymers with isocyanate-reactive groups is brought into the form of a latent-reactive powder.
  • These powders can be used as latent-reactive adhesives or for coating purposes, such as powder coatings.
  • the dispersions according to the invention can be sprayed onto the non-adhesive surface of a circulating belt with dehesive surfaces or applied by means of a printing process. After volatilisation of the water the dry particles are scraped off the tape, optionally screened and classified, and stored until use.
  • Latent-reactive powders can also be produced from backing-free films or tapes by grinding processes, optionally at low temperatures. They are used as heat-reactive crosslinkable adhesive or coating powders. Application equipment and methods are prior art and are known to the person skilled in the art.
  • the latent-reactive prefabricated layers produced by the process according to the invention are preferably used as a high temperature-resistant bonded joint for flexible or solid substrates, such as for example metals, plastics, glass, wood, wood composites, card, films, synthetic flat materials, textiles.
  • the reactive coating powders produced according to the invention can also be processed by the application methods for powder coatings.
  • the crosslinking temperature can be so low that heat-sensitive substrates such as plastics, textiles and wood can be coated without thermal damage.
  • the process also allows the coating powders to be sintered only or to be melted on the substrate to form a closed layer. Complete crosslinking then takes place in a subsequent heat treatment process, optionally after an additional mechanical or thermal processing step.
  • Solvent-free hydrophilically modified crosslinker isocyanates based on MI trimers NCO content approx. 20%, viscosity approx. 1200 mPas at 23° C.
  • Non-ionic, liquid, aliphatic polyurethane-based thickener viscosity at 23° C.: >9000 mPas; non-volatile components: approx. 50 wt. %.
  • Aqueous solution of an anionic, acrylate-based thickener viscosity at 20° C. (Brookfield, LVT, hydrometer IV, 6 rpm): 25,000 to 60,000 mPas; non-volatile components: approx. 10 wt. %.
  • the polymer partially crystallises after drying the dispersion and cooling the film to 23° C.
  • TM thermomechanical analysis
  • thermomechanical analysis TMA was conducted analogous to ISO 11359-3, Part 3: “Determination of penetration temperature”.
  • Specimens measuring 200 ⁇ 50 ⁇ 0.15 mm 3 consisting of two films were overlapped in a single layer and press bonded (laminated). The films are left separate for a length of approximately 40 mm to create two tongues, which can be clamped in the clamps of a tensile testing machine.
  • the surface to be bonded measures approx. 160 ⁇ 50 mm 2 . The strength of the bond was measured at 120° C.
  • the viscosity of the Dispercoll U dispersion is first increased using a thickener.
  • a reactive dispersion adhesive was produced with the specified polyisocyanates in a high-speed mixer as follows:
  • Example 1 (comparative example; not according to the invention) Dispercoll ® U 53 100 Borchigel ® ALA 2
  • Example 2 (according to the invention) Dispercoll ® U 53 100 Borchigel ® ALA 2 Desmodur ® DN 5
  • Example 3 (according to the invention) Dispercoll ® U 53 100 Borchigel ® ALA 2 Dispercoll ® BL XP 2514 10
  • Example 4 Dispercoll ® U 53 100 Borchigel ® ALA 2 IPDI trimer formulation (3 eq. % amino 20 groups from Jeffamine T-403)
  • the adhesive mixtures from examples 1 to 5 were applied with a spiral knife to Makrofol® ID 6-2 (polycarbonate film textured on both sides, from Bayer MaterialScience AG, specifically for identification cards, 6 side: roughness R 3 z approx. 9 ⁇ m; 2 side: R 3 z approx. 4 ⁇ m) of thickness 150 ⁇ m in a wet film thickness of 1100 ⁇ m.
  • the films were dried under normal conditions.
  • each of the coated films was laminated to an uncoated Makrofol® ID 6-2, 150 ⁇ m film and tested as described in section C). Lamination was carried out under mechanical pressure of 2 kp/cm 2 at 90° C. and 120° C. (press bonding).
  • Example 1 Not according to the A 90 1.03 invention
  • Example 1 Not according to the B 90 0.46 invention
  • Example 1 Not according to the C 90 1.38 invention
  • Example 1 Not according to the A 120 0.80 invention
  • Example 1 Not according to the B 120 0.88 invention
  • Example 1 Not according to the C 120 0.66 invention
  • Example 2 According to the A 90 8.67 invention
  • Example 2 According to the B 90 6.54 invention
  • Example 2 According to the C 90 2.64 invention
  • Example 2 According to the A 120 4.95 invention
  • Example 2 According to the B 120 3.21 invention
  • Example 2 According to the C 120 2.51 invention
  • Example 3 According to the A 90 11.57 invention
  • Example 3 According to the B 90 13.24 invention
  • Example 3 According to the C 90 13.42 invention
  • Example 3 According to the A 120 10.48 invention
  • Example 3 According to the B 120 17.90 invention
  • Example 3 According to the C 120 14.77 invention
  • Example 4 According to the A 90 3.52 invention
  • Example 4 According to the B 90 5.84 invention
  • Example 4 According to the C 90 5
  • Example 7 Dispercoll ® VP KA 8755 700 Borchigel ® L 75 N 7 Dispercoll ® BL XP 2514 70
  • Example 8 KRAU 2756 K-1 700 Borchigel ® L 75 N 7 Dispercoll ® BL XP 2514 70
  • the adhesive mixtures from examples 7 to 8 were applied with a spiral knife to Makrofol® ID 1-1 (polycarbonate film, smooth on both sides, from Bayer MaterialScience AG, specially for identification cards) of thickness 250 ⁇ m in a wet film thickness of 50 ⁇ m.
  • the films were dried in a vacuum drying cabinet at 50° C.
  • each of the coated films was laminated to an uncoated Makrofol® ID 1-1, 250 ⁇ m film and tested as described in section C). Lamination was carried out under mechanical pressure of 2 kp/cm 2 at 120° C. and 135° C. (press bonding).
  • Example 7 According to the A 120 31.30 invention
  • Example 7 According to the D 120 71.04 invention
  • Example 7 According to the A 135 73.59 invention
  • Example 7 According to the D 135 140.41 invention
  • Example 8 According to the A 120 55.82 invention
  • Example 8 According to the D 120 63.36 invention
  • Example 8 According to the A 135 38.87 invention
  • Example 8 According to the D 135 95.02 invention
  • the laminates with the adhesive compositions according to examples 7 and 8 were still characterised by the formation of a very firm bonded joint. Even better bonds were achieved at the activation temperature of 135° C. than at 120° C.

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  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Credit Cards Or The Like (AREA)
US12/269,180 2007-11-13 2008-11-12 Latent-reactive adhesives for identification documents Abandoned US20090123757A1 (en)

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US20160168434A1 (en) * 2014-12-15 2016-06-16 H.B. Fuller Company Reactive adhesive with enhanced adhesion to metallic surfaces
US10640702B2 (en) 2013-08-01 2020-05-05 Covestro Llc Coated particles and methods for their manufacture and use
US11802226B2 (en) 2013-07-30 2023-10-31 H.B. Fuller Company Polyurethane adhesive film

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EP2441589A1 (de) 2010-10-14 2012-04-18 Bayer Material Science AG Sicherheits- und/oder Wertdokument enthaltend einen elektromechanischen Wandler
ES2498928T3 (es) 2010-10-25 2014-09-26 Bayer Intellectual Property Gmbh Estructura multicapa de plástico con baja transmisión de energía
EP2455228A1 (de) 2010-11-18 2012-05-23 Bayer Material Science AG Sicherheits- und/oder Wertdokument enthaltend einen elektromechanischen Wandler
JP5697955B2 (ja) * 2010-11-19 2015-04-08 住化バイエルウレタン株式会社 多層加飾フィルム
US10406845B2 (en) 2013-03-15 2019-09-10 Gemalto Sa Flexible hinge material comprising cross-linked polyurethane material
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US20110200801A1 (en) * 2008-10-23 2011-08-18 Bayer Material Science Ag Id cards with blocked laser engraving writability
US9079443B2 (en) 2008-10-23 2015-07-14 Bayer Materialscience Ag ID cards with blocked laser engraving writability
US8673452B2 (en) 2010-12-03 2014-03-18 Bayer Materialscience Ag Security and/or valuable documents with a top layer with a scratch-resistant finish
US11802226B2 (en) 2013-07-30 2023-10-31 H.B. Fuller Company Polyurethane adhesive film
WO2015017244A1 (en) * 2013-07-31 2015-02-05 Dow Global Technologies Llc Structural pu adhesive for composite bonding
US10155838B2 (en) 2013-07-31 2018-12-18 Dow Global Technologies Llc Structural PU adhesive for composite bonding
US10640702B2 (en) 2013-08-01 2020-05-05 Covestro Llc Coated particles and methods for their manufacture and use
US20160168434A1 (en) * 2014-12-15 2016-06-16 H.B. Fuller Company Reactive adhesive with enhanced adhesion to metallic surfaces
US9944834B2 (en) 2014-12-15 2018-04-17 H.B. Fuller Company Reactive film adhesives with enhanced adhesion to metallic surfaces
US9957427B2 (en) * 2014-12-15 2018-05-01 H.B. Fuller Company Reactive adhesive with enhanced adhesion to metallic surfaces

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CN101855070B (zh) 2014-10-22
KR20150080626A (ko) 2015-07-09
BRPI0820526A2 (pt) 2015-06-16
RU2496651C2 (ru) 2013-10-27
EP2209619B1 (de) 2019-12-11
KR20100087713A (ko) 2010-08-05
JP2011504427A (ja) 2011-02-10
RU2010123438A (ru) 2011-12-20
EP2209619A1 (de) 2010-07-28
DE102007054046A1 (de) 2009-06-18
WO2009062602A1 (de) 2009-05-22
CA2705396A1 (en) 2009-05-22
CN101855070A (zh) 2010-10-06
MY176985A (en) 2020-08-31
CA2705396C (en) 2016-11-29

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